What unit do we use to measure frequency?
Hertz, Hz
What types of medium can sound travel through
Solids ie through brick wall, glass
Liquids ie under water
Gases ie through the air
What is oscillating when sound travels?
The particles in the medium through which it travels
What is an echo?
A reflected sound wave
What is the relationship between the amplitude of a sound wave and its volume?
The larger the amplitude, the louder the sound
What is the frequency of a wave?
The number of oscillations that happen every second
What is the relationship between the frequency of a wave and the pitch of the sound?
The higher the frequency, the higher the pitch
The lower the frequency sound wave, the lower the pitch
How are all types of sounds produced?
By a physical object vibrating or oscillating
Why can sound not travel in a vacuum?
There are no particles to oscillate in a vacuum as there’s no medium to travel through
How’s sound waves produced?
A sound wave is a longitudinal wave. When an object vibrates it produces a longitudinal wave which travels through air to your ear
